Yeah, I'd stay away from this person - I just got the same email(s) as you too: See below:
Hello
Thanks you very much for your urgent response, i have seen the pics, and i have relay it to my client and is very interested in buying it, and i have already explained everything to him about the rig and he wants to pay the amount you charged on it which is $1725.
He now requested for your Full Name and Address with your Phone Number so that he can make the check for you.because he is paying with a Money Order OR cashier's check which will easy to cash at your Bank.
And i will also arrange for the shipping agent who will come for the picking up at your house.when the check clears.
thanks for your co-operation